resident-function

Arguments: func

In previous releases, this function ensured that the function object
specified as the argument was fully loaded and then returned the
(perhaps now fully loaded) function object. When a fasl file was
loaded in libfasl (Allegro Presto) mode, it was typically only
partially loaded until used. In 7.0, the Allegro Presto facility has
been removed. This function is kept for backward compatibility only
and is essentially equivalent to the identity function, simply returning its
argument. (The argument func must still be a
function object -- not a symbol naming a function.)